System for chain of lights for use as Christmas tree lighting, has lighting units, each with two connectors to make connection with end of two part cable connections

摘要

A cable connection has multiple separate part cable connections (20-26) with plugs each serving to connect a lighting unit (3) to another lighting unit (3) and then to a current connector (1). Each lighting unit has two connectors to make a detachable electrical connection with the end of two part cable connections and holders (62) to hold filament or low voltage lamps (32). Independent claims are also included for a lighting unit with electrical connectors, for a connector cable to connect to lighting units and for a method for fastening a system for a chain of lights.